问答详细

您好，我申请UQ的Master课程，前几天收到UQ的con-offer，里面有这么一句话：“The school of Tourism has advised that you are to enrol in the Graduate Diploma in International Hotel and Tourism Management program. On successful completion of the Graduate Diploma in International Hotel and Tourism Management with a minimum cumulative GPA of 4.5(on the University of Queensland is 7.0 point scale) you will be eligible to proceed to Master of International Hotel and Tourism Management program. The total time to complete the Master's program via this route would be three full-time semesters.”
我想问是不是必须我要先上Graduate Diploma后再上Master，还是说我可以选择不上？
如果要先上GD后上Master，那么两个课程的时间分别要多久？